Half to the gould



(No Model.)

' G. T. LEE.

. TROLLEIWIRE HANGER.

No. 467,940. Patented Feb. .2, 1892.

VW J j f"' 2' J93 J4 Mia/mas.

UNITED STATES PATENT OFFICE.

CHARLES TENNANT LEE, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE- IIALF TO THE GOULD d: WATSON COMPANY, OF SAME PLACE.

TROLLEY-Wl RE HANG ER.

SPEGIFICATION forming part of Letters Patent No. 467,940, dated February 2, 1892.

Application filed March 20,1891. Serial No. 385,730. (No model.) I

To whom it m y concern: the coupling hereinafter referred to and de- Beit known that I, CHARLES TENNANT LEE. scribed. residing at Boston, in the county of Suffolk The hanger or insulator illustrated consists and State of Massachusetts, have invented a of two main portions, one being the supportnew and useful Improvement in Trolley-Wire ing portion lettered A, which is provided with 55 Hangers or Insulators, ofwhich the following means for attaching the hanger to the supis a specification. port, and the other being the wire-sustaining The trolley-wire hanger or insulator which portion B, which carries the wire-holding de- I have shown and now shall proceed to device F, by which the line-wireHis held. The

scribe is one which by its construction is spe two portions A B are connected by a coup 6o cially fitted for employment with what is ling 0. known as bracket-arm construction, the The wire-holding device F may be conlatter having a yard or arm projecting laterstructed in any known form and connected 7 ally from a post, standard, or other support with the wire H in any suitable manner. I

located at one side of an electric railway or have for convenience shown a form of clamp 65 at one side of the street on which such railwhich is fully shown and described in United way is situated; but the invention is not nec-- States Letters Patent No. 442,446, granted essarily restricted in application to such em- December 9, 1890, and to which reference ployment. In the case of a line-wire we may be had.

tained by laterally-projecting arms it is dint The portion B is or may be the usual bell- 7o cult to'secure complete and permanent insulashaped body of insulating material, having in tion of the line-wire. When a hanger or inthe lower part thereof the socket G, into which sulator is suspended over the line of a railis screwed the threaded upper end of the stem way by wires stretching from opposite sides of the wire-holding clamp F. In the upper 2 5 of the way, it is easy to effect what is called part of portion B is the socket G which is 7 double insulation by introducing insulatseparated from the socket G by intervening ing-sections into the supporting cross-wires, material of the body B, and is threaded for and thereby in the event of a defect or break the reception of the screw-threaded stem of in theinsulation of theline wire at the hanger the lower member 0 of the coupling 0. The

20 a leakage of the current through the hanger coupling 0 is formed of two members C 0 So and supports is prevented. Where a hanger the meeting ends of which are formed with is suspended from a yard or horizontal arm lugs, as shown most clearly in Fig. 2, and fixed at one end only to a standard or post, it united by a rivet C the ends of the said lugs is very difficult, however, as will be underbeing rounded, as shown, the object of this stood by those practically acquainted with construction being to permit a movement of electrical engineering, to insure against leakthe lower portion of the hanger in the direcage resulting from defective insulation or a tion of the line-wire. The member 0 of the failure of insulation at the hanger. coupling preferably is formed with an en- My object, therefore, is to provide a comlarged or conical head M, as shown, and the 0' pact, simple, and efficient device for supportinterior walls of the body of the upper por- 9o ing properly a line-wire adapted for use in tion A of the hanger are by preference shaped connection with a yard or horizontally-exto correspond approximately to the exterior tending arm such as has been mentioned, and of the said head. The said head and the adwhich shall provide for effecting a double injace'nt part of. the member 0' are incased by 5 sulation such as is desirable. a coating of insulating material L, which com- 5 A practical embodiment of my invention is pletely isolates the coupling from the porpresented in the accompanying drawings. tion A. I

In the drawings, Figure l is a view in ver- In the illustrated construction the upper tical section illustrating an embodiment of portion A of the hanger is fitted with a clamp,

50 my invention. Fig. 2 is a view in detail of whereby it may be attached conveniently to the yard or supporting-arm N.

(Shown in Fig.1 in section.) One member of this clamp is formed by the upper part of the portion A itself, this part being hollowed, as shown, to fit the under side of arm N. Amovable member or cap-plate O, similarly hollowed to fit the upper side of the arm, is applied, as shown, the body of portion A, as well as the cap-plate 0, being formed with corresponding laterallyextending lugs D D, through which pass bolts D having thereon nuts 1) for drawing together the parts upon the arm. A fillingblock E, suitably concaved on its upper side to fit the under side of arm N, is placed within the body of portion A and rests upon the insulating-covering upon the end of the head M of member 0 of the coupling, the under side of this block affording a flat bearing for the upper end of the coupling and obviating tendency to improper tilting or lateral movement. A skirt A at the lower side of portion A surrounds and incloses the joint of the coupling.

By making the hanger in two separate portions and uniting them by an intermediate coupling I am enabled to provide readily for the employment of insulating material at both ends of the coupling, thus providing for cheaply and practically securing an eflicient double insulation of the line-wire.

Heretofore in an insulating support for electric conductors it has been proposed to secure double insulation by forming the support in two main parts, one of which parts is the bell or insulator proper and has the wireholding device applied thereto, while the other of such parts is constructed as a sleeve which is formed with an internally-threaded tubular extension, into which the upper part of the bell is screwed, the said sleeve being fitted to the exterior of a block of insulating material that is slipped upon the supporting wire. In this construction one of the points at which insulation is effected is between the sleeve and the supportingwire, while the said sleeve and the portion carrying the wire-holding device are directly connected.

In the improved construction which I have shown and described, and mean to cover by my statement of that which I claim as of my invcntion,l rely for effective double insulation upon having separated from each other the attaching portion of the support and the portion thereof carrying the wire-holding device and having insulating material interposed between the ends of the coupling, which links together the said two portions and the said two portions themselves. The joint in the coupling renders the same flexible, so as to permit of the desired movement of the lower portion of the hanger in the direction of the length of the wire, whileat the same time the coupling'is practically rigid in a direction at right angles to the wirethat is, crosswise of the wire. The screw-threaded connection between the lower member of the coupling and the lower portion 13 of the hanger enables the said lower portion to be disconnected readily from the upper portion for any desired or necessary purpose.

That I claim is- 1. A trolley-wire hanger having a portion for attachment to a suitable support, a portion having a wire-holding device, and a coupling between the said two portions and havinginsulating material interposed between the ends thereof and the said attaching portion and wire-holding device, all substantially as described.

2. A trolley-wire hanger having a portion forattachment to a suitable support, a portion having a wire-holding device, and a coupling between the said two portions, which is insulated at both of the ends thereof and flexible in the direction of the wire, all substantially as described.

3'. A trolley-wire hanger having a portion for attachment to a suitable support, a portion having a wire-holding device, and a coupling between the said two portions, which is in-sulated at both of its ends and is composed of members pivotally connected to each othcrin a manner to permit movement in the direction of the wire, all substantially as described. at. A trolley-wire hanger having a portion for attachment to a suitable support, a portion having a wire-holding device, a coupling between the two portions, which is insuiated at both of its ends and is composed of members pivotally connected to each other in a manner to permit movement in the direction of the wire, said coupling having a separable connection with one of the said portions to permit. of disconnection, all substantially as described.

CHARLES TENNANT LEE. Witnesses:

, WM. A. MAcLEon,

ROBERT WALLAcn. 

